# -*- mode: python -*-
###
#
# (c) 2000-2007 Wijnand Modderman <wijnand at tehmaze dot com>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
#   * Redistributions of source code must retain the above copyright notice,
#     this list of conditions, and the following disclaimer.
#   * Redistributions in binary form must reproduce the above copyright notice,
#     this list of conditions, and the following disclaimer in the
#     documentation and/or other materials provided with the distribution.
#   * Neither the name of the author of this software nor the name of
#     contributors to this software may be used to endorse or promote products
#     derived from this software without specific prior written consent.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
###

# system imports
import inspect

# DDB imports
from ddb.log import log
from ddb.user import userRegister

class eventException(Exception):
    pass

class event:
    """Basic event, every incoming or outgoing message is an event."""

    def __init__(self, transport, type, **extra):
        self.transport = transport
        self.type      = type
        self.extra     = extra
        self.stopped   = False
        log.msg('New event on %s: %s (%s)' % (str(transport), type, str(extra)), debug=True)
        if hasattr(self.transport, 'modules'):
            self.transport.modules.hook(self)
        else:
            log.msg('No modules instance found in %s!' % str(self.transport))

    def __getattr__(self, name):
        if self.extra.has_key(name):
            return self.extra[name]
        raise AttributeError, name

    def __repr__(self):
        return '<%s transport=%s type=%s extra=%s>' % (str(self.__class__),
            self.transport, self.type, self.extra)

    def __str__(self):
        args = []
        for x in dir(self):
            if not str(x).startswith('_'):
                args.append('%s=%s' % (str(x), str(getattr(self, x))))
        args.sort()
        return '<%s %s>' % (str(self.__class__), ' '.join(args))

    def halt(self):
        self.stopped = True

    def reply(self, message):
        if self.extra.has_key('reply'):
            print 'EVENT.REPLY', self.extra['reply']
            self.extra['reply'](message, self)
        elif hasattr(self.transport, 'reply'):
            reply = getattr(self.transport, 'reply')
            print 'EVENT.REPLY', reply 
            reply(self, message)

# vim:ts=4:sw=4:et:
